<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    {% block head %}
    <link rel="stylesheet">
    {% endblock %}
</head>
<body>
{% block header %}
<h1>this is header</h1>
{% endblock %}

{% block body %}
<h1>this is body</h1>
{% endblock %}

{% block footer %}
<h1>this is footer</h1>
<script type="text/javascript" src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.js"></script>
{% endblock %}

{% block content %}
<script>
    //this is place for javascript
</script>
{% endblock %}
</body>
</html>
